ok i was given this truck 86 toy 1 ton pick up replaced head and all gaskets i blocked off the egr i have few open lines like the bottom of the multi diafram hell idk what it called i need to know when u block off where the line should all re route to so i got it running it idles fine not sure the alt is charging or not but i have new battery so i wont be able to tell for a bit when i step on the brake the rpms fluxctuat same with the gas even feathering the gas dose this i have spayed starting fluid in sm plaes to try and find a vac leak i can not find any any suggestion ?